The board of directors of YCIH Green High-Performance Concrete Company Limited announced that the Board received a written resignation from Mr. Rao Ye (Mr. Rao), the secretary to the Board and the joint company secretary of the Company. Mr. Rao resigned as the secretary to the Board and the joint company secretary of the Company due to work arrangement. In accordance with the Company Law of the People's Republic of China and the Articles of Association of YCIH Green High-Performance Concrete Company Limited, the relevant resignation shall become effective at the Board meeting held on March 29, 2022.

Mr. Rao has confirmed that he has no disagreement with the Board, and there is no matter in relation to his resignation that needs to be brought to the attention of The Stock Exchange of Hong Kong Limited and the shareholders of the Company. The Board further announced that at the Board meeting held on March 29, 2022, Ms. Liang Yuwei (Ms. Liang) was appointed as the secretary to the Board and the joint company secretary of the Company. Her term as the secretary to the Board shall commence on March 29, 2022 and end on the date of expiry of the second session of the Board, and her term as the joint company secretary shall commence on March 29, 2022.

Ms. Liang Yuwei, aged 34, joined the Company in January 2017 and has successively worked in the Planning and Development Department and the Board Office of the Company. Since August 2017, she has served as the deputy director, deputy director (in charge of overall operation) and director of the Board Office of the Company.